Dometic 4445101819 Installation Manual page 11

FW 3000
Problem Cause
No heating The under-bench air conditioner is not set to
capacity heating.
The ambient temperature is below 0 °C.
The temperature set is lower than the room
temperature.
The ambient temperature is higher than
31 °C.
The thermal protection is defective.
The compressor is damaged.
The refrigerating agent filling is insufficient.
The heat exchange coils are polluted.
The external blower is defective.
Low air output The air filter is obstructed.
The heat exchange coils are polluted.
The internal blower is defective.
Water enters the The condensation water drainage openings
vehicle are clogged up.
The seals are damaged.
Under-bench air No supply voltage (230 Vw) connected.
conditioner
The voltage is too low (under 200 Vw).
does not switch
The voltage converter is defective.
on.
The defective thermal protection is defective.
The electrical fuse of the power supply is too
low.
Under-bench air The air filter is obstructed.
conditioner
The voltage is too low (under 200 Vw).
stops working.
The voltage converter is defective.
The defective thermal protection is defective.
The condenser fan is damaged.
The heat exchange coils are polluted.
The external blower is defective.
Under-bench air One of the temperature sensors is defective.
conditioner
does not switch
off.
EN
Remedy
➤ Set the under-bench air conditioner to
heating.
The under-bench air conditioner is only
designed for ambient temperatures higher
than 0 °C.
➤ Select a higher temperature.
The temperature is adjustable between
16 °C and 31 °C.
➤ Contact an authorized workshop.
➤ Clean the air filter.
➤ Contact an authorized workshop.
➤ Clean the drainage openings for con-
densation water.
➤ Contact an authorized workshop.
➤ Check the power supply.
➤ Contact an authorized workshop.
➤ Check the electrical fuse of the power
supply.
➤ Clean the air filter.
➤ Contact an authorized workshop.
➤ Contact an authorized workshop.
Troubleshooting
11